Puncture-proof vehicle-wheel.



M. DRUOKERMAN. PUNOTURB PROOF VEHICLE WHEEL.

APPLICATION FILED NIB. 3, 1914.

1,121,235, Patented Dec. 15,1914.

1 /l i W,

ATTORNEY MAX DRUCXERMAN, OF BROOKLYN, NEW YORK.

PUNCTURE-YROOF VEHIGLE-XVHEEL.

o insists.)

Application filed February 3, 1914. Serial No. 816,150.

To all "whom it may concern Be it known that T, his DRUCKERMAN,

a citizen of the United States, and a resident of Brooklyn, in the county of Kings and 6 State of New York, have invented certain new and useful improvements in Puncture- Proot' Vehicle-Wheels, of which the following is a specification, taken in connection with the accompanying drawing, which forms a part of the same.

lily invention relates to vehicle wheels, and more particularly to one for power driven vehicles in which the resiliency of a pneumatic tire is obtained without the constant annoyance of punctures, blow-outs and similar unavoidable accidents incident to using an inflatable inner rubber tube and the ordinary outer shoe.

My invention relates broadly to such a puncture proof vehicle wheel, as well as to certain details of construction, which will be more fully hereinafter set forth in the specification and claim.

In the accompanying drawing' showing an at illustrative embodiment of,my invention and in which the same reference numerals refer to similar parts in the several figures; Figure 1 is a fragmentary norizontal section through my puncture proof vehicle .wheel certain portions of the drawings being somewhat exaggerated tor clearer illustration; Fig. 2 is a transverse vertical section sub stantially on the line of in Fig. 1; and Fig. 3 is a fragmentary portion of one form of clencher locking ring.

In the illustrative embodiment of my in-- vention shown in the drawing 1 is a vehicle wheel formed of any suitable spokes 2 and preferably a lmliow rim having an air chamber l communicating with a valve 5 of any sui ile construction. The periphery of the rim pmvidcd with a plurality of openings ti. and also, on either side, with a clencher oove "i'.

re periphery of the rim 3, in

manner. a series of hollow, submom ers which communiam 'rer *i' in the rim and cooperate with p tu movable members radial movement with re- 1 also, though air pi... from nu rs to the rs, which pas- Slpecification of Letters Patent.

Patented Dec. 15, 1914.

sage is in addition to the one through the air Mounted over each rigid, hollow member or cup 8 I mount a similar cooperatin movable outer cup member 12 having anges 13, 13 to cooperate with the Han cs l0, of a rigid member. Preferably t e cups 8 are spaced somewhat from each other leaving a gap, interval or chamber 14 between two fixed cups for the reception ofthe adjacent flanges 13, 13 of a pair of movable outer cups which act as pistons in the charm bers 14. In the drawing, I have exaggerated, for the purpose of illustration, the space between the pairs of fixed cups 8, 8. In practice the flanges 10, 10 of two pairs of fixed cupsare spaced apart a sufiicient distance to receive the adjacent flanges 13, 13 and leave a small air space between the movable flanges 13, 13 and the fixed flanges 10,,

10. This insures an immediate even distribution of the air pressure within my wheel. The passage of the air between the fixed flanges 10, 10 and the movable flanges 13, 13 serves to reduce the friction at this point and to prevent any undue heating of'the parts. A

The outer cup members 12 are preferably formed with domes 16 around which is molded the outer shoe, of any suitable material, 17, which'is provided with the clenchers 18, 18 to fit in the clencher grooves 7, 7 of the rim 3 and be held in that position by the two clencher locking rings 19, 19. These rings are each equipped with one or more turn buckles 20 to cooperate with the two threaded ends 21, 21 on the locking rings.

Ordinarily, the molding of the outer shoe 17 around the outer members 12, is sutfioient to prevent any relative movement between the movable cups 12 and the shoe 17. The series of projections 22 on the shoe 17 fitting in between the pairs of outer cups serve to aid this end. In some instances, in addition to the friction of the shoe 17 and the inner cups l secure them together in any suitable manncr such as by a series of bolts 23 and nuts 2- The heads 25 or" the bolts serve as an armor to the outer shoe 17 and as an anti-shid device. These bolts and nuts may 'be replaced with new ones as their heads wear out.

= movable cups, whatever their particular shape may be. The pressure is evenly distributed, not only in the difierent pairs of cups, but also in the chambers 14, 14:. It is obvious that in practice the pressure of the contained air Wlll be transmitted from the inner chamber 4 to the diflerent pairs of inner and outer cups and cylinders 14 in substantially the same manner that the pressure is distributed in an inner tube of an ordinary pneumatic tire. It is also clear that no nail, pin, glass or other article can puncture the tire for the reason that it would always be stopped by the outer members or cups. That portion 26 or" the outer shoe may be disregarded as this is so far from the periphery oi the Wheel, that in practicea puncture would not occur at this point. The adjustment of the locking rings 19 is such as to prevent any leakage of air between the clencher and the clencher groove 7.

While any suitable number of inner and v outer cups may be used, I prefer some definite relation between their size and the circumierence of the wheel 1. Vvith a wheel of 110 inches circumference, which is an :uianaee number of fixed and movable members and the distance between the points 28,28 may be varied as found convenient or expedient.

Having thus described this invention in connection with illustrative embodiments thereof to the details of which I do not desire to be limited, what is claimed as new and what is desired to secure by Letters Patent is set-forth in the appended claim.

In a puncture proof vehicle wheel, the combination of a wheel having a hollow rim provided with a plurality of openings on its circumference, hollow fixed members mounted on the rim and held fast to it and separated from each other, said hollow members having upwardly extending fixed flanges and openings to register with those in the rim, the spaces between the fixed flanges forming restricted chambers, a tire shoe, 1101- low members carried by the shoe and provided with downwardly extending flanges to act as pistons in the restricted chambers between the fixed members, there being air passages between the fixed and hollow members and the restricted chambers interpssqi between them, said restricted chambers, and said pistons moving within the restricted chambers, adapted to act as auxiliary cush- MAX DRUCKERMAN. Witnesses:

ALAN M. JonNsoN, M. WALSH, 

